FYI, I've just pushed to https://github.com/carlosabalde/libvmod-redis an alternative Redis VMOD. This one is focused on allowing full execution of LUA scripts (i.e. Redis EVAL & EVALSHA commands), which are a much better alternative to pipelines in modern versions of Redis. I've also tried to add some basic support to allow manipulation of simple array replies, better error handling and allowing arbitrary arguments to commands :)